期刊
GEOPHYSICAL RESEARCH LETTERS
卷 41, 期 3, 页码 1005-1011出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2013GL058987
关键词
North Pacific; dissolved inorganic carbon; Pacific Decadal Oscillation
资金
- Development of Mitigation and Adaptation Techniques to Global Warming in the Sectors of Agriculture, Forestry, and Fisheries
- Global Environment Research Account for National Institutes by the Ministry of Environment, Japan
- Division Of Ocean Sciences
- Directorate For Geosciences [1260164] Funding Source: National Science Foundation
We elucidated multiyear variations of sea surface dissolved inorganic carbon (DIC) concentrations in the North Pacific from 2002 to 2008 by using monthly DIC maps derived from partial pressure CO2 observations. The Pacific Decadal Oscillation (PDO) was related to an east-west seesaw pattern in the North Pacific DIC anomaly field. In the western North Pacific, DIC concentrations were relatively high from mid-2002 to mid-2005 and low after late 2007 compared with climatological values, and in the eastern North Pacific the opposite change was observed. Changes of the forcing factors associated with the PDO could explain the DIC east-west seesaw pattern: horizontal advection, freshwater fluxes and vertical mixing in most regions, CO2 fluxes south of 40 degrees N, and biological production in the subarctic.
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